Dictionary » S » Screens



1. To provide with a shelter or means of concealment; to separate or cut off from inconvience, injury, or danger; to shelter; to protect; to protect by hiding; to conceal; as, fruits screened from cold winds by a forest or hill. They were encouraged and screened by some who were in high comands. (Macaulay)

2. To pass, as coal, gravel, ashes, etc, through a screen in order to separate the coarse from the fine, or the worthless from the valuable; to sift. 3. To examine a group of objects methodically, to separate them into groups or to select one or more for some purpose. As (a), To inspect the qualifications of candidates for a job, to select one or more to be hired. (b) (Biochem, Med) To test a large number of samples, in order to find those having specific desirable properties; as, to screen plant extracts for anticancer agents.

Origin: Screened; Screening.

1. Anything that separates or cuts off inconvience, injury, or danger; that which shelters or conceals from view; a shield or protection; as, a fire screen. Your leavy screens throw down. (Shak) Some ambitious men seem as screens to princes in matters of danger and envy. (bacon)

2. A dwarf wall or partition carried up to a certain height for separation and protection, as in a church, to separate the aisle from the choir, or the like.


3. A surface, as that afforded by a curtain, sheet, wall, etc, upon which an image, as a picture, is thrown by a magic lantern, solar microscope, etc.

4. A long, coarse riddle or sieve, sometimes a revolving perforated cylinder, used to separate the coarser from the finer parts, as of coal, sand, gravel, and the like. 5. A netting, usu. Of metal, contained in a frame, used mostly in windows or doors to allow in fresh air while excluding insects. Screen door, a door of which half or more is composed of a screen. Screen window, a screen fitted for insertion into a window frame. 6. The surface of an electronic device, as a television set or computer monitor, on which a visible image is formed. The screen is frequently the surface of a cathode-ray tube containing phosphors excited by the electron beam, but other methods for causing an image to appear on the screen are also used, as in flat-panel displays. 7. The motion-picture industry; motion pictures. A star of stage and screen.

Origin: OE. Scren, OF. Escrein, escran, F. Ecran, of uncertain origin; cf. G. Schirm a screen, OHG. Scrim, scern a protection, shield, or G. Schragen a trestle, a stack of wood, or G. Schranne a railing.

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Re: Human Beings Resistance Power.

Do you think this can eventually be used on TV's? With the internet moving onto our big screens this could become useful.

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by craft6009
Tue Nov 22, 2011 11:16 am
Forum: Human Biology
Topic: Human Beings Resistance Power.
Replies: 6
Views: 4500

Re: weight lifting, repetitions & evolution theory

... we can do comfortably "despite" its extreme historical recentness, like listening to rock music, or wearing blue jeans, or staring at screens (although that last one can be problematic, for reasons indirectly tied to evolution). There still are environments too extreme for humans to ...

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by Lenoxus
Mon Apr 26, 2010 12:08 am
Forum: Evolution
Topic: weight lifting, repetitions & evolution theory
Replies: 6
Views: 8700

Natural Selection

we also use genetic screens and sometimes abort/not implant embryos which might have bad diseases.

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by mith
Wed Feb 24, 2010 4:35 am
Forum: Evolution
Topic: Natural Selection
Replies: 9
Views: 4823

Re: Important unknown nanotech within humans

... diagnosis and treatment of thyroid cancer. Lull was a highly revered expert in the field of nuclear medicine, a specialty that performs diagnostic screens such as bone scans for cancer patients. Last year, Lull lectured in San Francisco about the threat of nuclear terrorism. —Circumstance of Death: ...

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by vincio
Mon Feb 16, 2009 2:36 am
Forum: Molecular Biology
Topic: Important unknown nanotech within humans
Replies: 32
Views: 162122


... ligase would generate bands higher than MCS itself (which is 222 like I mentioned). p.s. Also thanks for recommending the LIC protocol for colony screens from Novagen. I have not tried it yet, but will use it shortly. I've been using triton to lyse my cells. Canalon-- I've been using GC5 supercompetent ...

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by ashlie23
Sun Apr 06, 2008 6:04 am
Forum: Molecular Biology
Topic: problem with cloning/restriction digest
Replies: 35
Views: 39119
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